nvim: Add lsp references preview window

Add 'glances.nvim' plugin which shows the LSP references, definitions and
implementations in a very nice floating preview window. (Previously we
used Telescope which is still called if the glances plugin does not
exist.)

Can preview, scroll in the floating window, go to the destination, open
the destination in vert/horiz splits.

nvim/.config/nvim/lazy-lock.json

@@ -29,6 +29,7 @@
   "fwatch.nvim": { "branch": "main", "commit": "a691f7349dc66285cd75a1a698dd28bca45f2bf8" },
   "git-conflict.nvim": { "branch": "main", "commit": "4c8e252b87d54d944c1e56bfb477f78b6fdaf661" },
   "gitsigns.nvim": { "branch": "main", "commit": "6ef8c54fb526bf3a0bc4efb0b2fe8e6d9a7daed2" },
+  "glance.nvim": { "branch": "master", "commit": "8ed5cf3b3b1231ea696d88c9efd977027429d869" },
   "headlines.nvim": { "branch": "master", "commit": "d39c4e6ed8963717bc9b2dc39fada8fe1039e9bf" },
   "image.nvim": { "branch": "master", "commit": "9b6248bd8b58b505559e31eb581b7c4638369ec3" },
   "lazy.nvim": { "branch": "main", "commit": "28126922c9b54e35a192ac415788f202c3944c9f" },

nvim/.config/nvim/lua/plugins/config/lsp.lua

@@ -79,7 +79,12 @@ local function on_attach(client, bufnr)
 	)
 	map("n", "<localleader>la", "<cmd>lua vim.lsp.buf.code_action()<cr>", { buffer = bufnr, desc = "Codeactions" })
 	map("n", "<localleader>ln", "<cmd>lua vim.lsp.buf.rename()<cr>", { buffer = bufnr, desc = "Rename element" })
-	if vim.fn.exists(":Telescope") then
+	if vim.fn.exists(":Glance") then
+		map("n", "<localleader>lr", "<cmd>Glance references<cr>", { buffer = bufnr, desc = "References" })
+		map("n", "<localleader>lf", "<cmd>Glance definitions<cr>", { buffer = bufnr, desc = "Definition" })
+		map("n", "<localleader>lt", "<cmd>Glance type_definitions<cr>", { buffer = bufnr, desc = "Type definition" })
+		map("n", "<localleader>lm", "<cmd>Glance implementations<cr>", { buffer = bufnr, desc = "Implementation" })
+	elseif vim.fn.exists(":Telescope") then
 		map("n", "<localleader>lr", "<cmd>Telescope lsp_references<cr>", { buffer = bufnr, desc = "References" })
 		map("n", "<localleader>lf", "<cmd>Telescope lsp_definitions<cr>", { buffer = bufnr, desc = "Definition" })
 		map(
@@ -128,7 +133,7 @@ local function on_attach(client, bufnr)
 end
 
 -- Display diagnostics as virtual text only if not in insert mode
--- https://lr.artemislena.eu/r/neovim/comments/12inp4c/disable_diagnostics_virtual_text_when_in_insert/jqqifwk/
+-- /r/neovim/comments/12inp4c/disable_diagnostics_virtual_text_when_in_insert/jqqifwk/
 vim.api.nvim_create_autocmd("InsertEnter", {
 	callback = function()
 		vim.diagnostic.config({ virtual_text = false })

nvim/.config/nvim/lua/plugins/ide.lua

@@ -66,11 +66,13 @@ return {
 		config = function()
 			require("plugins.config.lsp")
 		end,
-		keys = { {
-			"<leader>vs",
-			":LspInfo<cr>",
-			desc = "LspInfo",
-		} },
+		keys = { { "<leader>vs", ":LspInfo<cr>", desc = "LspInfo" } },
+	},
+	-- very very pretty lsp 'peek' menus
+	{
+		"DNLHC/glance.nvim",
+		opts = { border = { enable = true }, theme = { enable = true, mode = "auto" } },
+		cmd = { "Glance" },
 	},
 
 	-- linting setup